Liquid crystal display device

ABSTRACT

A liquid crystal display device which can, even in case where a vibration and an impact such as drop are exerted on a note type computer in which the liquid crystal display device is mounted, prevent a fitting portion for fixing a case body and an LCD cover from disengaging and a pawl portion of the fitting portion from being damaged, and which has fixing means whose maintenance performed by detaching the case body and the LCD cover is easy. A frame-like cushion material whose internal dimension is smaller than an external dimension of a liquid crystal display element and which is formed by using a material excellent in its elastic coefficient and having a high friction factor is mounted inside the case body  4  of the liquid crystal display device, and the liquid crystal display element is fitted into the frame.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to a liquid crystal display device.

[0003] 2. Description of the Related Art

[0004] The progress in information communication technology and producttechnology in recent years is remarkable, and computers and Japaneseword processors, which have operation throughputs in EWS class of onegeneration ago and to which large capacity recording devices are added,glut the market, and they are supplied at low prices up to now.Computers of nowadays are classified mainly into a thin and light one,which can be driven by accumulator or battery in order to have aportable function and is convenient for carrying, and a desk top typeequivalent to conventional ones.

[0005] As to the computer having the portable function, in each companythere has been advanced a development laying emphasis on increasing anoperation processing speed and on a portable ability, and there havebeen performed various commodity developments responding to clients'needs from a watch-like small size type fixed by a belt, which issmall-sized and light and in which a function in the portable ability isinvestigated, to an A4 or A5 size note type and a lap top type, in eachof which a monitor has been eliminated in order to effectively use aspace on a table in an office.

[0006] The computers of the note type and the lap top type are epochalproducts in each of which a peripheral equipment consisting of amagnetic recording device, an input/output functional section consistingof a keyboard and a display section are integrated in a main body, andeach of which is integrated so as to be opened/closed by using amechanism part (hereafter, referred to as hinge) supporting the displaysection in a rotatable state.

[0007]FIGS. 7A and 7B are schematic views showing an external appearanceof a conventional note type computer in which a liquid crystal displaydevice is mounted as the display section. FIG. 7A shows a state in whichthe display section is closed, and FIG. 7B a state in which the displaysection is opened. FIGS. 8A and 8B are plan views showing the displaysection (liquid crystal display device) of FIGS. 7A and 7B. FIG. 8Ashows a state in which an LCD cover is attached, and FIG. 8B a state inwhich the LCD cover is detached. FIGS. 9A to 9D are sectional views ofportions shown in FIGS. 7A, 7B and FIGS. 8A, 8B. FIG. 9A shows a sectiontaken along a line C-C, FIG. 9B a section taken along a line D-D, FIG.9C a section taken along a line E-E, and FIG. 9D a section taken along aline F-F.

[0008] In the drawings, 1 denotes a liquid crystal display device, i.e.,display section of the note type computer, 2 a liquid display element, 3an LCD cover, 4 a case body of the liquid crystal display device, 5 ahinge, 6 a circuit substrate, 8 a fitting portion between the LCD cover3 and the case body 4, 8 a a fitting pawl portion provided in the LCDcover 3, 8 b a fitting pawl portion provided in the case body 4, 13 abolt, 17 an FPC, and 18 a double-coated tape.

[0009] As shown in FIGS. 7A and 7B, in the liquid crystal display device1, the circuit substrate 6 of the liquid crystal display element 2 andthe hinges 5 are accommodated between the case body 4 and the LCD cover3 and, further, an opening/closing function of the liquid crystaldisplay device 1 is maintained by the hinges 5.

[0010] Further, a fixing between the LCD cover 3 and the case body 4 ofthe liquid crystal display device 1 is performed by mutually fitting thepawl portions 8 a and 8 b provided in the LCD cover 3 and the case body4 and, additionally in order to strengthen a fixing between the LCDcover 3 and the case body 4, there are adopted a method in which thefixing is performed by adhering to the double-coated tape 18 and amethod in which the LCD cover 3 is fixed to the case body 4 by the bolt13 through a hole provided in the former.

[0011] Since the fixing between the LCD cover 3 and the case body 4 ofthe liquid crystal display device 1 is performed by the methodsmentioned above, there have been such problems that, in case where avibration and an impact such as drop are exerted on the note typecomputer in which the liquid crystal display device 1 is mounted, thefitting portion 8 between the LCD cover 3 and the case body 4 isdisengaged, so that the liquid crystal display element 2 is injured orthe pawl portions 8 a and 8 b are damaged and, further in case where thedouble-coated tape 18 is used in order to strengthen the fixing, aworkability is reduced by a removal of the double-coated tape 18 when itis necessary to detach the LCD cover 3 from the case body 4 for thepurpose of repair and the like and, additionally when the double-coatedtape 18 is highly adhesive, the LCD cover 3 is injured, so that it mustbe exchanged.

[0012] Further, as to the method in which the LCD cover 3 is fixed tothe case body 4 by the bolt through the hole provided in the former,there have been such problems that a workability at a maintenance timeis reduced, and a cost becomes high owing to an increase in the numberof members.

[0013] Further, accompanying with a demand for miniaturization of theliquid crystal display device, there has been a problem that, by thefact that the liquid crystal display device 1 is designed such that itsframe is suitably narrowed, a clearance between the liquid crystaldisplay element 2 and the case body 4 is decreased as shown in FIG. 9C,so that it is difficult to fit the LCD cover 3 to the case body 4.

SUMMARY OF THE INVENTION

[0014] The invention has been made in order to solve such problems asmentioned above, and its object is to provide a liquid crystal displaydevice which can, even in case where the vibration and the impact suchas drop are exerted on a note type computer in which the liquid crystaldisplay device is mounted, prevent a fitting portion for fixing the casebody and the LCD cover from disengaging and a pawl portion of thefitting portion from being damaged, which has fixing means whosemaintenance performed by detaching the case body and the LCD cover iseasy, and which can cope with narrowing the frame of the liquid crystaldisplay device.

[0015] The invention provides a liquid crystal display devicecomprising: a liquid crystal display element in which a liquid crystalmaterial is interposed between two opposed insulating substrates; a casebody disposed in a back side of the liquid crystal display element andsupporting the liquid crystal display element; an LCD cover disposed ina display surface side of the liquid crystal display element, having anopening portion in a display region, and accommodating the liquidcrystal display element by integrating with the case body through afitting portion; and a cushion material arranged in the case body in aframe-like form and holding the liquid crystal display element byfitting it into the frame; wherein the cushion material is constitutedsuch that the fitting portion between the case body and the LCD cover isoppressed by the fact that the liquid crystal display element is fittedinto the cushion material, thereby strengthening the fitting.

[0016] Further, the invention provides a liquid crystal display devicewherein, in the above constitution, the cushion material is formed byusing a material excellent in its elastic coefficient and having a highfriction factor.

[0017] Further, the invention provides a liquid crystal display devicecomprising: a liquid crystal display element in which a liquid crystalmaterial is interposed between two opposed insulating substrates; a casebody disposed in a back side of the liquid crystal display element andsupporting the liquid crystal display element; an LCD cover disposed ina display surface side of the liquid crystal display element, having anopening portion in a display region, and accommodating the liquidcrystal display element by integrating with the case body through afitting portion; mechanism parts (hinges) fixed to the case body andsupporting the case body accommodating the liquid crystal displayelement and integrated therewith and the LCD cover in a rotatable state;and pawl portions provided in the LCD cover and capable of engaging withthe hinges.

[0018] Further, the invention provides a liquid crystal display devicecomprising: a liquid crystal display element in which a liquid crystalmaterial is interposed between two opposed insulating substrates; a casebody disposed in a back side of the liquid crystal display element andsupporting the liquid crystal display element; an LCD cover disposed ina display surface side of the liquid crystal display element, having anopening portion in a display region, and accommodating the liquidcrystal display element by integrating with the case body through afitting portion; mechanism parts (hinges) supporting the case bodyaccommodating the liquid crystal display element and integratedtherewith and the LCD cover in a rotatable state; and pawl portionsprovided in the LCD cover in portions where the hinges are mounted, andfixed to the case body together with the hinges by a bolt and the like.

[0019] Further, the invention provides a liquid crystal display devicewherein, in the above constitution, the LCD cover and the case body areconstituted such that the hinge can be mounted after the LCD cover andthe case body have been integrated.

BRIEF DESCRIPTION OF THE DRAWINGS

[0020]FIG. 1A is a plan view showing a liquid crystal display deviceaccording to an Embodiment 1 of the invention;

[0021]FIG. 1B is a sectional view showing the same;

[0022]FIG. 1C is a partial enlarged sectional view showing the same;

[0023]FIGS. 2A and 2B are sectional views showing another liquid crystaldisplay device according to the Embodiment 1 of the invention;

[0024]FIGS. 3A and 3B are sectional views showing still another liquidcrystal display device according to the Embodiment 1 of the invention;

[0025]FIG. 3C is a partial enlarged sectional view showing the same;

[0026]FIG. 4A is a plan view showing the liquid crystal display deviceaccording to an Embodiment 2 of the invention;

[0027]FIG. 4B is a sectional view showing the same;

[0028]FIG. 5A is a perspective view showing the liquid crystal displaydevice according to an Embodiment 3 of the invention;

[0029]FIG. 5B is a sectional view showing the same;

[0030]FIG. 5C is an exploded sectional view showing the same;

[0031]FIG. 6 is a sectional view for explaining a method of measuring aneffect by the invention;

[0032]FIGS. 7A and 7B are schematic views showing a note type computerin which a conventional liquid crystal display device of this kind ismounted;

[0033]FIGS. 8A and 8B are plan views showing the conventional liquidcrystal display device; and

[0034]FIGS. 9A to 9D are sectional views showing the conventional liquidcrystal display device.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0035] Embodiment 1

[0036] Hereunder, it is explained about a liquid crystal display devicewhich is one embodiment of the invention. FIGS. 1A to 1C are viewsshowing a liquid crystal display device according to an Embodiment 1 ofthe invention. FIG. 1A is plan view of a state in which an LCD cover isdetached, FIG. 1B a sectional view taken along a line A-A in FIG. 1A,and FIG. 1C an enlarged sectional view of a fitting portion in FIG. 1B.Incidentally, in FIG. 1B, for convenience' sake there is shown a statein which the LCD cover is mounted.

[0037] In the drawings, 1 denotes a liquid crystal display device, i.e.,display section of a note type computer, 2 a liquid display element, 3an LCD cover, 4 a case body of the liquid crystal display device, 5 ahinge, 6 a circuit substrate, 7 a cushion material, 8 a fitting portionbetween the LCD cover 3 and the case body 4, 8 a a fitting pawl portionprovided in the LCD cover 3, and 9 a groove portion provided in thecushion material 7.

[0038] In the liquid crystal display device of this embodiment, sincethe frame-like cushion material 7 capable of accommodating the liquidcrystal display element 2 is mounted inside the case body 4, and sinceit is designed such that an internal dimension of a frame by the cushionmaterial 7 becomes smaller than an external dimension of the liquidcrystal display element 2, by fitting the liquid crystal display element2 into the frame formed by the cushion material 7, the cushion material7 applies an even pressure to the case body 4 and the liquid crystaldisplay element 2 is held by the cushion material 7.

[0039] Incidentally, the cushion material 7 is provided in its portioncorresponding to the fitting portion 8 between the LCD cover 3 and thecase body 4 with the groove portion 9 and, when mounting the LCD cover 3on the case body 4, the LCD cover 3 and the case body 4 are integratedby inserting the pawl portion 8 a of the LCD cover 3 into the grooveportion 9.

[0040] Further, in this embodiment, a rubber material is used as amaterial of the cushion material 7, and there are obtained two effectsof a buffer effect for the liquid crystal display element 2 by fittingthe liquid crystal display element 2 into the cushion material 7 inwhich the internal dimension of the frame is designed so as to besmaller than the external dimension of the liquid crystal displayelement 2, and of a fitting reinforcement between the case body 4 andthe LCD cover 3 owing to an oppression of the cushion material 7 againstthe fitting portion 8 by the fact that the liquid crystal displayelement 2 is fitted, and owing to an increase in frictional forcebetween the cushion material 7 and the fitting portion 8. However,equivalent effects can be obtained also by using a material excellent inits elastic coefficient and having a high friction factor, for example,plastic resin such as epoxy group or ethyl acetate group, and thickvinyl tape.

[0041] Further, as to a size of the cushion material 7, it is set suchthat, in case where an external dimension of the liquid crystal displayelement 2 is 277 mm×198 mm for instance, the internal dimension of theframe of the cushion material 7 is 275 mm×196 mm, and thus a reducedwidth with respect to the external dimension of the liquid crystaldisplay element is 2 mm respectively in longitudinal and lateraldirections.

[0042] Incidentally, the cushion material 7 is used for the purpose ofholding the liquid crystal display element 2 and oppressing the fittingportion 8, and the reduced width of the internal dimension of the frameby the cushion material 7 with respect to the external dimension of theliquid crystal display element 2 may be made in the order of 1 mmrespectively in longitudinal and lateral directions.

[0043] Further, although a thickness of the cushion material 7 may beequivalent to the liquid crystal display element 2, or thinner orthicker than it, in case where it is made thicker than the liquidcrystal display element 2, since a gap is generated between the LCDcover 3 and the liquid crystal display element 2, by causing the LCDcover 3 to have a structure capable of dealing with a step between thecushion material 7 and the liquid crystal display element 2 as shown inFIG. 2A, it is possible to intend to improve the buffer effect against apressure and the impact from the outside.

[0044] Further, as shown in FIG. 2B, by covering the cushion material 7with a mesh-like material 7 a consisting of a metal material, it ispossible to electrically connect the liquid crystal display element 2and the case body 4 through the mesh-like material 7 a, so that areliability of the liquid crystal display element 2 can be improved.

[0045] Further, although the cushion material 7 having a rectangularshape in its sectional shape has been used, even if there is used onewhose sectional shape is an approximately U-shape and whose inside ishollow for the purpose of lightening the liquid crystal display deviceor one whose side contacting with the liquid crystal display element 2is made a semicircular shape, an effect as the cushion material 7 isequivalent.

[0046] Further, the LCD cover 3 and the case body 4 may be fixed byadopting a shape of the fitting portion 8 between the LCD cover 3 andthe case body 4 such that, as shown in FIG. 3A, a pawl portion 8 b isprovided in a case body 4 side and it is fitted into a groove providedin an LCD cover 3 side.

[0047] Additionally, as shown in FIG. 3B, it is also possible tostrengthen the fitting between the LCD cover 3 and the case body 4 byadopting such a structure that the fitting pawl portion 8 b provided inthe case body 4 is opened outward by a pressure owing to the fact thatthe liquid crystal display element 2 is mounted in the cushion material7.

[0048] Further, not by directly fitting the pawl portion 8 a of the LCDcover 3 and the pawl portion 8 b of the case body 4, but by fixing thepawl portions 8 a and 8 b by means of using a block 8 c or the like asshown in FIG. 3C, it may be intended to strengthen the fixed portion byan oppression of the cushion material 7.

[0049] According to this embodiment, by mounting, inside the case body 4of the liquid crystal display device 1, the frame-like cushion material7 designed such that its internal dimension is smaller than the externaldimension of the liquid crystal display element 2 and formed using thematerial excellent in its elastic coefficient and having a high frictionfactor, and by fitting the liquid crystal display element 2 into theframe, even in case where the vibration and the impact such as drop areexerted on the liquid crystal display device 1, it is possible tostrengthen the fitting between the case body 4 and the LCD cover 3 andbuffer the impact exerted on the liquid crystal display element 2, bythe fact that the cushion material 7 oppresses the fitting portion 8 andthus a frictional force between the cushion material 7 and the fittingportion 8 is increased.

[0050] Further, since the case body 4 and the LCD cover 3 are fixed onlyby the fitting, a screw and the like, which have been hithertonecessary, for strengthening the fixing between the case body and theLCD cover become unnecessary, so that the number of members can bedecreased and a maintenance performed by detaching the case body 4 andthe LCD cover 3 becomes easy.

[0051] Additionally, in the case body 4, since the liquid crystaldisplay element 2 is held by the cushion material 7 owing to itselasticity, the blanket, the screw and the like, which have beenhitherto necessary, for holding the liquid crystal display element 2become unnecessary.

[0052] Embodiment 2

[0053]FIGS. 4A and 4B are views showing the liquid crystal displaydevice according to an Embodiment 2 of the invention. FIG. 4A is a planview of a state in which the LCD cover is detached, and FIG. 4B a sideview in which a section taken along a line B-B in FIG. 4A is seen froman arrow mark direction. Incidentally, in FIG. 4B, for convenience'ssake there is shown a state in which the LCD cover is mounted.

[0054] In the drawings, 11 denotes a pawl portion provided in the LCDcover 3. Incidentally, as to the same portion as FIGS. 1A to 1C, thesame reference numeral is affixed thereto, and its explanation isomitted.

[0055] In the liquid crystal display device according to thisembodiment, besides fitting portion 8, similar to conventional one,between the LCD cover 3 and the case body 4, the pawl portion 11designed so as to be capable of being extended to a back side (case body4 side) of the hinge 5 is provided in a position corresponding to aportion where the hinge 5 is attached to the case body 4 of the LCDcover 3.

[0056] According to this embodiment, by providing the LCD cover 3 withthe pawl portion 11 capable of being extended to the back side of thehinge 5, the LCD cover 3 can be engaged with the hinge 5 fixed to thecase body 4 by using the pawl portion 11, so that it is possible tostrengthen a fixing between the LCD cover 3 and the case body 4.Additionally, a method of strengthening the fixing between the LCD cover3 and the case body 4 by the above structure can be applied also to theliquid crystal display device whose frame has been narrowed.

[0057] Embodiment 3

[0058]FIGS. 5A to 5C are views showing the liquid crystal display deviceaccording to an Embodiment 3 of the invention. FIG. 5A is a perspectiveview midway of an assembling process of the liquid crystal displaydevice, FIG. 5B a sectional view midway of the assembling process of theliquid crystal display device, and FIG. 5C an exploded sectional viewfor explaining a constitution of the liquid crystal displaydevice.

[0059] In the drawings, 12 denotes an L-shape pawl portion provided inthe LCD cover 3, and 13 a bolt. 13 a denotes a cylindrical protrusionportion provided inside the case body 4, and in its inside there isthreaded a screw meshing with the bolt 13. 13 b denote a spacer, 14 ahole portion provided in, the LCD cover 3 through which the bolt 13 isinserted, and 15 an opening portion for inserting the hinge 5 after theLCD cover 3 has been mounted on the case body 4, Incidentally, as to thesame portion as FIGS. 4A and 4B, the same reference numeral is affixedthereto, and its explanation is omitted.

[0060] In the liquid crystal display device according to thisembodiment, the L-shape pawl portion 12 is provided in a portion, of theLCD cover 3, where the hinge 5 is attached, the hinge 5 is inserted fromthe opening portion 15 after the LCD cover 3 has been mounted on thecase body 4, and the bolts 13 are inserted from the hole portions 14provided in the LCD cover 3, thereby simultaneously fixing the LCD cover3, the hinge 5 and case body 4. On this occasion, as shown in FIG. 5B, asectional structure of a fixing portion by the bolts 13 becomes a statein which the case body 4, the L-shape pawl portion 12 of the LCD cover3, the hinge 5 and the LCD cover 3 have been superposed in this orderfrom a back side of a display screen.

[0061] Incidentally, since the hinge 5 is inserted after the LCD cover 3has been mounted on the case body 4, the case body 4 is provided with aframe such that the hinge 5 can be easily mounted in a predeterminedposition.

[0062] Further, the case body 4 is provided with the cylindricalprotrusion portion 13 a in which the screw has been threaded, theL-shape pawl portion 12 and the hinge 5 are fitted with the protrusionportion 13 a, the hinge 5 is fixed to the L-shape pawl portion 12 of theLCD cover 3 by the spacer 13 b, and the bolt 13 is meshed with thecylindrical protrusion portion 13 a, thereby simultaneously fixing thehinge 5 and the LCD cover 3 to the case body 4.

[0063] Further, in this embodiment, as a material constituting the casebody 4 and the LCD cover 3, there has been used a resin molded articleconsisting of a plastic such as polycarbonate, but it is possible tointend a buffer and a fitting strengthening by using a high polymermaterial excellent in its elastic coefficient. Further, by using a metalmaterial, a looseness, owing to strain, of the fitting portion by theimpact can be prevented, so that it is possible to intend the fittingstrengthening.

[0064] Next, a fixing strength between the LCD cover 3 and the case body4 of the liquid crystal display device 1 of this embodiment is measured.As shown in FIG. 6, in a measuring method, by using a push-pull gauge16, a pressure was applied until a fixing portion between the LCD cover3 and the case body 4 was broken. In the liquid crystal display device 1according to this embodiment, it was necessary to apply the pressure of10-15 kg weight until the fixing portion between the LCD cover 3 and thecase body 4 was broken.

[0065] For comparison, when the pressure was applied in a similar methodto the conventional liquid crystal display device in which the LCD coverand the case body was not fixed by the double-coated tape, it was brokenby applying the pressure of 5 kg weight.

[0066] According to this embodiment, by providing the L-shape pawlportion 12 in the portion, of the LCD cover 3, where the hinge 5 isattached, inserting the hinge 5 from the opening portion 15 after theLCD cover 3 has been mounted on the case body 4, and inserting the bolts13 from the hole portions 14 provided in the LCD cover 3 to therebysimultaneously fix the LCD cover 3, the hinge 5 and the case body 4, itis possible to strengthen the fixing between the case body 4 and the LCDcover 3, and simultaneously perform the fixing strengthening between thecase body 4 and the LCD cover 3 and the fixing of the hinge 5, so thatthe members can be reduced.

[0067] Additionally, by unscrewing the bolts 13, since it becomespossible to detach only the hinge 5, it is possible to preventbeforehand a trouble to an opening/closing function, which results froma deterioration of the hinge 5 and which has hitherto been a problem,and an adverse effect on the liquid crystal element owing to minutevibrations and noises occurring at an opening/closing time.

[0068] As mentioned above, according to the invention, by mounting,inside the case body of the liquid crystal display device, theframe-like cushion material whose internal dimension is smaller than theexternal dimension of the liquid crystal display element and which isformed using the material excellent in its elastic coefficient andhaving a high friction factor, and by fitting the liquid crystal displayelement into the frame, even in case where the vibration and the impactsuch as drop are exerted on the liquid crystal display device, it ispossible to prevent the integrated case body and LCD cover from beingbroken, and buffer the impact exerted on the liquid crystal displayelement.

[0069] Further, since the case body and the LCD cover are fixed only bythe fitting, a screw and the like, which have been hitherto necessary,for strengthening the fixing between the case body and the LCD coverbecome unnecessary, so that the number of members can be decreased and amaintenance performed by detaching the case body and the LCD coverbecomes easy.

[0070] Additionally, in the case body, since the liquid crystal displayelement is held by the cushion material owing to its elasticity, theblanket and the screw, which have been hitherto necessary, for holdingthe liquid crystal display element become unnecessary, so that a costcan be reduced by the decease in the number of members.

[0071] Further, by providing the LCD cover, in a portion to which thehinge that is an opening/closing mechanism of the liquid crystal displaydevice is attached, with the pawl portion capable of being extended tothe back side of the hinge, the LCD cover can be engaged with the hingefixed to the case body by using the pawl portion, so that it is possibleto strengthen the fixing between the LCD cover and the case body.

[0072] Additionally, since a structure in which the LCD cover isprovided with the pawl portion capable of being extended to the backside of the hinge and the pawl portion is engaged with the hinge can beapplied also to the liquid crystal display device designed such that itsframe is narrowed, it is possible to easily strengthen the fixingbetween the LCD cover and the case body also in the liquid crystaldisplay device designed such that its frame is narrowed.

[0073] Further, by providing the LCD cover, in the portion to which thehinge that is the opening/closing mechanism of the liquid crystaldisplay device is attached, with the L-shape pawl portion, disposing thehinge in a predetermined position after the LCD cover has been mountedon the case body, and simultaneously fixing the hinge cover and the pawlportion of the LCD cover to the body case by the bolt and the like froman outside of the LCD cover, it is possible to strengthen the fixingbetween the LCD cover, the case body and the LCD cover, andsimultaneously perform the fixing between the case body and the hinge,so that the members can be decreased.

[0074] Additionally, by unscrewing the bolts, since it becomes possibleto detach only the hinge, a maintenance of the hinge becomes easy.

What is claimed is:
 1. A liquid crystal display device comprising: a liquid crystal display element in which a liquid crystal material is interposed between two opposed insulating substrates; a case body disposed in a back side of the liquid crystal display element and supporting the liquid crystal display element; an LCD cover disposed in a display surface side of the liquid crystal display element, having an opening portion in a display region, and accommodating the liquid crystal display element by integrating with the case body through a fitting portion; and a cushion material arranged in the case body in a frame-like form and holding the liquid crystal display element by fitting it into the frame; in which the cushion material is constituted such that the fitting portion between the case body and the LCD cover is oppressed by the fact that the liquid crystal display element is fitted into the cushion material, thereby strengthening the fitting.
 2. A liquid crystal display device set forth in claim 1 , wherein in that the cushion material is formed by using a material excellent in its elastic coefficient and having a high friction factor.
 3. A liquid crystal display device comprising: a liquid crystal display element in which a liquid crystal material is interposed between two opposed insulating substrates; a case body disposed in a back side of the liquid crystal display element and supporting the liquid crystal display element; an LCD cover disposed in a display surface side of the liquid crystal display element, having an opening portion in a display region, and accommodating the liquid crystal display element by integrating with the case body through a fitting portion; mechanism parts (hinges) fixed to the case body and supporting the case body accommodating the liquid crystal display element and integrated therewith and the LCD cover in a rotatable state; and pawl portions provided in the LCD cover and capable of engaging with the hinges.
 4. A liquid crystal display device comprising: a liquid crystal display element in which a liquid crystal material is interposed between two opposed insulating substrates; a case body disposed in a back side of the liquid crystal display element and supporting the liquid crystal display element; an LCD cover disposed in a display surface side of the liquid crystal display element, having an opening portion in a display region, and accommodating the liquid crystal display element by integrating with the case body through a fitting portion; mechanism parts (hinges) supporting the case body accommodating the liquid crystal display element and integrated therewith and the LCD cover in a rotatable state; and pawl portions provided in the LCD cover in portions where the hinges are mounted, and fixed to the case body together with the hinges by a bolt and the like.
 5. A liquid crystal display device set forth in claim 4 , wherein the LCD cover and the case body are constituted such that the hinge can be mounted after the LCD cover and the case body have been integrated. 